Abstract

The change in land use and factors such as overgrazing, long periods of drought and intensive agriculture have caused that Sonora's pastures lose more than half of their productive potential. The recovery of deteriorated soils is gradual and long-term so, that it is urgent to implement rehabilitation programs in these areas. According to the results, with respect to height, there were no significant differences between some species such as: palo verde c., palo fierro and mesquite with values of 37.11 to 45.56 cm, with respect to the rest of the species (Palo verde a., palo blanco, Tepehuaje, palo verde H. ATZ and Ceiba tésota), with values of 90.6 to 112.7 cm. In aerial coverage, there were no significant differences, in palo blanco, palo fierro and Ceiba tésota with covers of 390.3 to 4394 cm2 , except for the species of palo verde c., palo verde a., tepehuaje, mesquite and palo v. h ATZ with coverage from 3111 to 10068 cm2. Finally, as regards stem coverage, there were no significant differences between the species of Palo verde c., Palo verde a., Tepehuaje, Palo Fierro, Mesquite, Palo v. h ATZ and Ceiba tésota with stems of 0.5592 to 3.0356 cm2 , except the palo blanco with 12.0480 cm2 . It is possible that these species, 6 months after their establishment in abandoned agricultural areas, can rehabilitate areas in the short term.

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